Mizere Yamafuta Apansi Pansi - X65 SSAW Chitoliro Chachitsulo
Spiral submerged arc welded chitoliro ndi gawo lofunikira laumisiri wamadzi, mafakitale a petrochemical, makampani opanga mankhwala, mafakitale amagetsi, ulimi wothirira, komanso zomangamanga zamatawuni. Kusinthasintha kwake komanso kudalirika kwapangitsa kuti ikhale imodzi mwazinthu zazikulu makumi awiri zomwe zapangidwa m'dziko lathu, zomwe zikuwonetsa kufunikira kwake komanso momwe zimakhudzira mafakitale osiyanasiyana.
Chitoliro chachitsulo cha SSAWamapangidwa mwachizolowezi kuti azinyamulira zamadzimadzi ndipo ndi yoyenera pamayendedwe amadzi ndi ngalande. Kapangidwe kake kolimba kamapangitsa kuti ikhale yabwino powonetsetsa kuti madzi akuyenda bwino komanso odalirika. Kuphatikiza apo, ndiyoyeneranso kuyendetsa gasi monga gasi wamalasha, nthunzi, ndi gasi wamafuta amafuta. Kulimba kwake kwamphamvu kwambiri komanso kukana kwa dzimbiri kumapangitsa kuti mpweya ukhale wotetezeka komanso wothandiza komanso umakwaniritsa zofunikira zamakina operekera mpweya.
Katundu Wakuthupi ndi Wamankhwala Wamapaipi Achitsulo (GB/T3091-2008, GB/T9711-2011 ndi API Spec 5L) | ||||||||||||||
Standard | Gulu lachitsulo | Zamankhwala (%) | Tensile Property | Charpy (V notch) Impact Test | ||||||||||
c | Mn | p | s | Si | Zina | Yield Strength (Mpa) | Mphamvu Yamphamvu (Mpa) | (L0 = 5.65 √ S0 (mphindi Wotambasula) (%) | ||||||
max | max | max | max | max | min | max | min | max | D ≤ 168.33mm | D > 168.3mm | ||||
GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 < 1.20 | 0.045 | 0.050 | 0.35 | Kuwonjezera Nb\V\Ti molingana ndi GB/T1591-94 | 215 | 335 | 15 | > 31 | |||
Q215B | ≤ 0.15 | 0.25-0.55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
Q235A | ≤ 0.22 | 0.30 < 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | > 26 | |||||
Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | > 26 | |||||
Q295A | 0.16 | 0.80-1.50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | > 23 | |||||
Q295B | 0.16 | 0.80-1.50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | > 23 | |||||
Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | > 21 | |||||
Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | > 21 | |||||
GB/T9711-2011 (PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 | Posankha kuwonjezera chimodzi mwazinthu za Nb\V\Ti kapena kuphatikiza kulikonse | 175 | 310 | 27 | Chimodzi kapena ziwiri mwazowonetsa mphamvu zamphamvu ndi malo ometa zitha kusankhidwa. Kwa L555, onani muyezo. | ||||
L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Kwa kalasi B chitsulo, Nb+V ≤ 0.03%; zitsulo ≥ kalasi B, kusankha kuwonjezera Nb kapena V kapena kuphatikiza kwawo, ndi Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0 = 50.8mm) kuti iwerengedwe motsatira ndondomeko iyi: e=1944·A0 .2/U0 .0 A: Dera lachitsanzo mu mm2 U: Mphamvu zochepa zotchulidwa mu Mpa | Palibe kapena chilichonse kapena zonse ziwiri zomwe zimakhudzidwa ndi gawo lometa zomwe zimafunikira ngati muyeso wolimba. | ||||
A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
x46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
x56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
x65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 |
Chimodzi mwazofunikira za mipope yachitsulo yozungulira yozungulira ya arc ndimzere wa gasi wapansi panthaka. Ndi khalidwe lake lapamwamba ndi ntchito zake, ndiye chisankho choyamba chomanga maukonde odalirika komanso otetezeka a gasi.
Chitoliro cha mzere wa X65 SSAWamapangidwa kuchokera ku zipangizo zapamwamba zomwe zimapangitsa kuti zikhale zolimba komanso zolimba. Izi zimapangitsa kuti zikhale zabwino kwa mapulogalamu omwe amafunikira kuthamanga kwambiri komanso kukana zinthu zachilengedwe. Kuyenerera kwake pamakhazikitsidwe apansi panthaka kumawunikiranso kamangidwe kake kolimba komanso kuthekera kopirira zovuta, ndikupangitsa kuti ikhale yankho losankhira ntchito zamapaipi apansi panthaka.
Monga chinthu chodalirika komanso chotsimikizirika, mapaipi athu achitsulo ozungulira arc welded amatengedwa kwambiri m'mafakitale ndi mapulojekiti azomangamanga chifukwa chakuchita bwino, kulimba komanso kudalirika. Kumanga kwake kwapamwamba kumapanga chisankho choyamba cha kayendedwe ka madzi ndi gasi, makamaka mumzere wa gasi wapansi pansi pomwe chitetezo ndi mphamvu ndizofunikira.
Mwachidule, spiral submerged arc welded steel pipe ndi chinthu chabwino kwambiri chomwe chimapangidwa kuti chikwaniritse zosowa zosiyanasiyana zamakina operekera madzi ndi mpweya. Chifukwa cha kusinthasintha kwake komanso kudalirika, yakhala gawo lalikulu m'mafakitale osiyanasiyana komanso ma projekiti a zomangamanga, makamaka mzere wa gasi wapansi panthaka. Ubwino wake wapadera komanso magwiridwe antchito ake zimapangitsa kuti ikhale yofunikira pakuwonetsetsa kuti pamakhala njira yabwino komanso yotetezeka yoyendera gasi. Khulupirirani kudalirika ndi magwiridwe antchito a mapaipi athu achitsulo ozungulira arc welded pazosowa zanu zonse zamadzimadzi ndi gasi.